Guidelines for use of the Common Command Language (CCL) are briefly described in this report. The CCL was designed to combine functions of individual command languages available with databases on the interactive bibliographic retrieval system 3RIP. Conditions of user-system interaction are explained, with a list of user aids available. The 20 commands comprising the language are summarized, then discussed in more detail in a discussion on searching with CCL. Appendices contain a symbol table for English 3RIP and selected dynamic help messages. (SW)